Backed out 4 changesets (bug 842549) for assertions
CLOSED TREE

Backed out changeset 9f2d0e38fdf8 (bug 842549)
Backed out changeset f6941e490ba2 (bug 842549)
Backed out changeset c3444536fd8e (bug 842549)
Backed out changeset 2af2bfe5e66a (bug 842549)